Question

Halophytes can grow on physiological dry soil due to

• A. Dry soil
• B. Excessive humidity outside
• C. Excessive salts in plants
• D. Excessive salts in water

Answer 1

The correct option is C Excessive salts in plants

Halophytes grow in physiologically dry soil. The soil is having water but the soil solution has a high concentration of salts. Thus, the water is not easily available to plants, because water flows from a region of high water potential to a region of low water potential.

Excess salt in soil solution means the water potential of soil solution is very less. To counter the reduction in water potential in the soil solution, the halophytes maintain a highly concentrated cell sap. So, the concentration of salt is very high in these plants.

So, the correct answer is option C.